Analysis

  • max time kernel
    151s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-10-2023 20:13

General

  • Target

    e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe

  • Size

    473KB

  • MD5

    f83fb9ce6a83da58b20685c1d7e1e546

  • SHA1

    01c459b549c1c2a68208d38d4ba5e36d29212a4f

  • SHA256

    e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684

  • SHA512

    934ec9073a28b90e8df785bef49f224789da59f83729208b92dba0503e2894b3f48ed04b20de1ba49374b1cd26f0c87e8e5ab79e817258135e3be2c171f3f396

  • SSDEEP

    12288:v6l/7FpnaeoQbRLBYdunMCayql4YcQD+AgJbAWgjbgpQ:CDna43YAKl4Yci+AggEpQ

Malware Config

Extracted

Path

C:\odt\DECRYPT-FILES.html

Ransom Note
<html> <head> <script> function CopyToClipboard(containerid) { if (document.selection) { var range = document.body.createTextRange(); range.moveToElementText(document.getElementById(containerid)); range.select().createTextRange(); document.execCommand("copy"); } else if (window.getSelection) { var range = document.createRange(); range.selectNode(document.getElementById(containerid)); window.getSelection().addRange(range); document.execCommand("copy"); alert("Base64 copied into the clipboard!") } } </script> <style> html{ margin:0; padding:0; width:100%; height:100%; } body { background: #000000; color: #ececec; font-family: Consolas }; .tooltip { position: relative; display: inline-block; border-bottom: 1px dotted black; } .tooltip .tooltiptext { visibility: hidden; width: 120px; background-color: #555; color: #fff; text-align: center; border-radius: 6px; padding: 5 px 0; position: absolute; z-index: 1; bottom: 125%; left: 50%; margin-left: -60px; opacity: 0; transition: opacity 0.3s; } .tooltip .tooltiptext::after { content: ""; position: absolute; top: 100%; left: 50%; margin-left: -5px; border-width: 5px; border-style: solid; border-color: #555 transparent transparent transparent; } .tooltip:hover .tooltiptext { visibility: visible; opacity: 1; } p#base64{ -ms-word-break: break-all; word-break: break-all; -webkit-hyphens: auto; -moz-hyphens: auto; -ms-hyphens: auto; hyphens: auto; } p#base64:hover{ cursor: hand; } </style> </head> <body> <table style="position: absolute;" width="100%"> <tr> <td style="width: 25%;"> <td style="width: 50%;"> <div style="text-align: center; font-size: 20px;"> <p><b>Maze ransomware</b></p> <p>*********************************************************************************************************************</p> <p>Attention! Your documents, photos, databases, and other important files have been encrypted!</p> <p>*********************************************************************************************************************</p> </div> <div style="text-align: center; font-size: 18px;"> <p><b>What is going on?</b><br>Your files have been encrypted using strong reliable algorithms RSA-2048 and ChaCha20 with an unique private key for your system</p> <p>You can read more about this cryptosystem here: <a href=https://en.wikipedia.org/wiki/RSA_(cryptosystem)>https://en.wikipedia.org/wiki/RSA_(cryptosystem)</a></p> <p>The only way to recover (decrypt) your files is to buy decryptor with the unique private key</p> <p><u>Attention! Only we can recover your files! If someone tell you that he can do this, kindly ask him to proof!</u></p> <p>By us you can decrypt one of your files for free as a proof of work that we have the method to decrypt the rest of your data.</p> <p>In order to either buy the private key or make test decryption contact us via email: <br> <u><b>Main e-mail: [email protected]<br>Reserve e-mail: [email protected]</b></u> <p>Remember to hurry up as email address may not be available for very long as soon as law enforcements of different countries always trying to seize emails used in ransom companies <p>If you are willing to pay but you are not sure knock us and we will save your e-mail address. In case the listed addresses are seized we will write you from the new one</p> <p>Below you will see a big base64 blob, you will need to email us and copy this blob to us.<br>you can click on it, and it will be copied into the clipboard.</p> <p>If you have troubles copying it, just send us the file you are currently reading, as an attachment.</p> <p>Base64: </p> </div><div style="text-align: center; font-size: 12px;"><p id="base64" onclick="return CopyToClipboard('base64')" class="tooltip">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<span class="tooltiptext">Click here to copy</span></p></div></td><td style="width: 25%; text-align: right;"></tr></table></body></html>
Emails

[email protected]<br>Reserve

[email protected]</b></u>

Signatures

  • Maze

    Ransomware family also known as ChaCha.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Drops startup file 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
    "C:\Users\Admin\AppData\Local\Temp\e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe"
    1⤵
    • Drops startup file
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1352
    • C:\Windows\system32\wbem\wmic.exe
      "C:\uxa\vc\..\..\Windows\ykye\ow\..\..\system32\cuiwx\ho\..\..\wbem\j\..\wmic.exe" shadowcopy delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4644
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1148

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\odt\DECRYPT-FILES.html

    Filesize

    6KB

    MD5

    ba8396d30e9439d0b2116b65e306f19f

    SHA1

    8effff1997ef10d6823324a3631cd51076f83873

    SHA256

    cc12b6dba81833c4e07498c052e299288edbcdc17dbc22c9b6ae912f650ac985

    SHA512

    174572d192c92e0410809d48310eafd386ae120a982306326780dbfaf6a55f54fdc07a15bfaeed5d0355ac3c317991d89483349d433fb8f2fff2c850adc5c591

  • memory/1352-0-0x0000000002460000-0x00000000024B9000-memory.dmp

    Filesize

    356KB

  • memory/1352-1-0x0000000002600000-0x000000000265B000-memory.dmp

    Filesize

    364KB

  • memory/1352-5-0x0000000002600000-0x000000000265B000-memory.dmp

    Filesize

    364KB

  • memory/1352-9-0x0000000002600000-0x000000000265B000-memory.dmp

    Filesize

    364KB

  • memory/1352-10-0x0000000002600000-0x000000000265B000-memory.dmp

    Filesize

    364KB

  • memory/1352-14-0x0000000002600000-0x000000000265B000-memory.dmp

    Filesize

    364KB